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Potassium periodate

Description References
Potassium periodate
Potassium periodate
Chemical Name:
Potassium periodate
POTASSIUM PERIODATE;Potassium m-Perioda;POTASSIUM M-PERIODATE;PotassiumPeriodateKIO4;Potassium periodate 99%;POTASSIUM METAPERIODATE;PotassiumMetaperiodateGr;potassium periodate, acs;Potassium metaperiodiate;Potassium periodate, 99+%
Molecular Formula:
Formula Weight:
MOL File:

Potassium periodate Properties

Melting point:
582 °C
Boiling point:
explodes [HAW93]
storage temp. 
H2O: 0.01 M at 20 °C, clear, colorless
Specific Gravity
White to off-white
pH (5g/l, 25℃) : 4.5~5.5
Water Solubility 
0.42 g/100 mL (20 ºC)
Stable. Strong oxidizer - contact with combustible materials may cause fire. Incompatible with organic material, combustible material, strong reducing agents, powdered metals.
CAS DataBase Reference
7790-21-8(CAS DataBase Reference)
EPA Substance Registry System
Periodic acid (HIO4), potassium salt(7790-21-8)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  O,Xi
Risk Statements  8-36/37/38
Safety Statements  17-26-36-37/39
RIDADR  UN 1479 5.1/PG 2
WGK Germany  3
HazardClass  5.1
PackingGroup  II
HS Code  28299000
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H271 May cause fire or explosion; strong oxidiser Oxidising liquids;Oxidising solids Category 1 Danger P210, P220, P221, P280, P283,P306+P360, P371+P380+P375,P370+P378, P501
H272 May intensify fire; oxidizer Oxidising liquids;Oxidising solids Category 2
Category 3
P210, P220, P221P280, P370+P378,P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P220 Keep/Store away from clothing/…/combustible materials.
P221 Take any precaution to avoid mixing with combustibles/…
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P371+P380+P375 in case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
P405 Store locked up.

Potassium periodate price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 210056 Potassium periodate ACS reagent, 99.8% 7790-21-8 100g $159 2018-11-13 Buy
Sigma-Aldrich 210056 Potassium periodate ACS reagent, 99.8% 7790-21-8 500g $324 2018-11-13 Buy
Alfa Aesar 022896 Potassium periodate, ACS, 99.8%-100.3% 7790-21-8 100g $91.8 2018-11-16 Buy
Alfa Aesar 022896 Potassium periodate, ACS, 99.8%-100.3% 7790-21-8 25g $37.5 2018-11-16 Buy
Sigma-Aldrich 60450 Potassium (meta)periodate puriss. p.a., ACS reagent, ≥99.8% (dried material, RT) 7790-21-8 100g-f $168 2018-11-13 Buy

Potassium periodate Chemical Properties,Uses,Production


Potassium periodate (chemical formula: KIO4) is a kind of inorganic salt composed of a potassium cation and a periodate anion. It can be used for the determination of potassium and cerium owing to its low solubility of KIO4. It can be used an oxidizing agent, and as a source of oxygen. It can also be used for the determination of the concentration of other compounds through measuring the reaction between DPC (sc-202590) and KIO4. It can be synthesize through the oxidation of potassium iodate through chlorine and potassium hydroxide, or by the electrochemical oxidation of potassium iodate.


Chemical Properties

colourless crystals or white crystalline powder


Powerful oxidizer in acid solution, oxidizing manganese Compounds to permanganate; used for this purpose in analytical chemistry (colorimetric estimation of Mn), also for the oxidation of some organic Compounds.


Fire risk in contact with organic materials, strong oxidizing agent. Strong irritant to tissue.

Purification Methods

Crystallise it from distilled water. Its solubility in H2O is 0.2% at 0o, 0.4% at 20o, 4.4% at 80o. and 7.9% at 100o. [Hill Inorg Synth I 171 1939, Schmeisser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 325 1963.]

Potassium periodate Preparation Products And Raw materials

Raw materials

Preparation Products

Potassium periodate Suppliers

Global( 171)Suppliers
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Shenzhen Sendi Biotechnology Co.Ltd.
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Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32651 55
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30291 84
Shandong Ono Chemical Co., Ltd. 0539-6362799(To 20)
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J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
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Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
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JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078,021-50426030
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Shanghai Hanhong Scientific Co.,Ltd. 021-54306202,021-54308259
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Potassium periodate Spectrum

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